Kill 20 Combine Soldiers/Civil Protection overall.
Kill 50 Combine Soldiers/Civil Protection overall.
Kill 100 Combine Soldiers/Civil Protection overall.
Kill 20 Hunters overall.
Kill 50 Hunters overall.
Kill 100 Hunters overall.
Reach the maximum level in a game.
Kill 100 enemies in a game.
Kill 1,000 enemies overall.
Kill 1,000,000 enemies overall.
Kill a Combine Soldier/Civil Protection with a Hunter's Flechette in a game.
Kill 10 Hunters overall with their own flechettes.
Kill 100 enemies in a game on NIGHTMARE difficulty.
Kill 20 Antlions/Antlion Workers overall.
Kill 50 Antlions/Antlion Workers overall.
Kill 100 Antlions/Antlion Workers overall.
Kill 20 Antlion Guards/Antlion Guardians overall.
Kill 50 Antlion Guards/Antlion Guardians overall.
Kill 100 Antlion Guards/Antlion Guardians overall.
Kill 20 Zombies/Fast Zombies/Poison Zombies/Zombines overall.
Kill 50 Zombies/Fast Zombies/Poison Zombies/Zombines overall.
Kill 100 Zombies/Fast Zombies/Poison Zombies/Zombines overall.
Kill 20 Headcrabs/Fast Headcrabs/Poison Headcrabs overall.
Kill 50 Headcrabs/Fast Headcrabs/Poison Headcrabs overall.
Kill 100 Headcrabs/Fast Headcrabs/Poison Headcrabs overall.
Kill 20 Houndeyes/Bullsquids/Vortigaunts overall.
Kill 50 Houndeyes/Bullsquids/Vortigaunts overall.
Kill 100 Houndeyes/Bullsquids/Vortigaunts overall.
Kill 10 enemies in a game with the SMG's Grenades.
Kill 10 enemies without firing a single bullet after starting a game.
Kill 20 enemies without getting damaged after spawning.
Kill 10 enemies while at low health.
Kill over 100 enemies before your painful demise.
Kill 10 enemies with their own grenades.
Complete FIREFIGHT RELOADED: ENDGAME.